The Echinoid Directory

Subfamily Cidarinae
Mortensen, 1928, p. 286

interambulacra with single large primary tubercle that is perforate and primarily non-crenulate (traces of crenulation may be present adapically, on adapical side of platform)

no naked furrows or pits developed interradially or perradially

scrobicular tubercles differentiated from extrascrobicular granules.

Range

?Upper Triassic, Peru; Lower Cretaceous to Recent, worldwide.

Remarks

There are few, if any, synapomorphies distinguishing this subfamily. In the following key the Triassic genus Triassicidaris is omitted because of an absence of information on its spines and apical disc plating.

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